Which of the following statements is false for a particle moving in a circle with a constant angular speed
The velocity vector is tangent to the circle
The acceleration vector is tangent to the circle
The acceleration vector points to the centre of the circle
The velocity and acceleration vectors are perpendicular to each other
A sphere of mass $m$ is tied to end of a string of length $l$ and rotated through the other end along a horizontal circular path with speed $v$. The work done in full horizontal circle is
A wheel completes $2000$ revolutions to cover the $9.5\, km$. distance. then the diameter of the wheel is
A particle moves along a circle of radius $\left( {\frac{{20}}{\pi }} \right)\,m$ with constant tangential acceleration. If the velocity of the particle is $80 \,m/s$ at the end of the second revolution after motion has begin, the tangential acceleration is
A particle is tied to $20\, cm$ long string. It performs circular motion in vertical plane. What is the angular speed of particle when the tension in the string at the top is zero ......... $rad/sec$
In $1.0\, s$ a particle goes from point $A$ to point $B$, moving in a semicircle of radius $1.0\, m$ (see figure). The magnitude of the average velocity is ......... $m/s$